You could start by fixing these two errors;
[ERROR] gamemodes/tf2/entities/weapons/tf_weapon_minigun.lua:25: '=' expected near 'TAB'
1. unknown - gamemodes/tf2/entities/weapons/tf_weapon_minigun.lua:0
[ERROR] gamemodes/tf2/entities/weapons/tf_weapon_minigun.lua:56: Tried to use a NULL entity!
1. SetNoDraw - [C]:-1
2. unknown - gamemodes/tf2/entities/weapons/tf_weapon_minigun.lua:56
It could be caused by this as well, as it is the last thing spammed in the console before the crash initiated:
Requesting texture value from var "$dudvmap" which is not a texture value (material: models/effects/muzzleflash/blurmuzzle)
EDIT: I looked at some more crash logs, and this is pretty interesting as well:
7516(4199.459562): NULL Ent in GiveNamedItem!
7515(4199.459552): Attempted to create unknown entity type tf_weapon_fists!
7514(4199.459519): NULL Ent in GiveNamedItem!
7513(4199.459485): Attempted to create unknown entity type tf_weapon_shotgun!
7512(3988.073465):
7511(3988.066617):
7510(3988.066585): CRASH IMINENT!7509(3971.171221):
7508(3971.137272):
7507(3971.137240): CRASH IMINENT!7506(3968.053921):
7505(3968.047534):
7504(3968.047505): CRASH IMINENT!7503(3964.583068):
7502(3964.576250):
7501(3964.576171): CRASH IMINENT!7500(3917.425615):
7499(3917.425607): RED7498(3917.425386): NULL Ent in GiveNamedItem!
7497(3917.425375): Attempted to create unknown entity type tf_weapon_fists!
7496(3917.425286): NULL Ent in GiveNamedItem!
7495(3917.425248): Attempted to create unknown entity type tf_weapon_shotgun!
7494(3917.421645): > Entity(1):StripWeapons() Entity(1):Spawn()...
7493(3915.498715): > Entity(1):StripWeapons()...
7492(3903.919440):
7491(3903.897734):
7490(3903.897702): CRASH IMINENT!7489(3900.424891):
7488(3900.406301):
7487(3900.406265): CRASH IMINENT!7486(3885.037784): > Entity(1):StripWeapons()...
Are you sure you are using the correct entity names? Try looking in your entities/weapons folder and verify if those are the correct names for the weapons
The crashes appear to be caused by the autorefresh thing by garry - every once in a while after a reload it crashes the game for some reason